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Columbia Engineering / NYU MBA for Math, Physics and Finance Tutoring.
Ephraim J.

5.0 (3,155 ratings)

9,892 hours tutoring

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Hourly Rate: $200
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About Ephraim

Bio

I am an experienced instructor specialising in advanced mathematics, physics, competition preparation, and quantitative finance. I hold a BS in Civil Engineering from Columbia University’s School of Engineering and Applied Science, where I completed Columbia’s advanced calculus sequence under Professor Lipman Bers, and an MBA in Finance from NYU Stern School of Business. I have also taught at the graduate level at NYU Stern School of Business, where I led recitation sections and delivered...

I am an experienced instructor specialising in advanced mathematics, physics, competition preparation, and quantitative finance. I hold a BS in Civil Engineering from Columbia University’s School of Engineering and Applied Science, where I completed Columbia’s advanced calculus sequence under Professor Lipman Bers, and an MBA in Finance from NYU Stern School of Business. I have also taught at the graduate level at NYU Stern School of Business, where I led recitation sections and delivered full-class lectures.

I have worked with high-achieving students worldwide, preparing them for AMC 8, AMC 10, AMC 12, AIME, Olympiad-track development, MATHCOUNTS, HMMT, PUMaC, and Canadian mathematics competitions.

Students under my guidance have qualified for AIME as early as 6th or 7th grade, earned distinctions in national and international competitions, and gained admission to leading universities and STEM programmes. I also teach Algebra I and II, Geometry, Trigonometry, Precalculus, AP Calculus AB and BC, Calculus I and II, Linear Algebra, Differential Equations, AP Physics 1, and AP Physics C, and I prepare students for the SAT, ACT, GRE, and GMAT.

My teaching emphasises deep conceptual understanding, rigorous reasoning, proof-based mathematics, and efficient problem-solving. I also offer advanced instruction in quantitative finance, including derivatives, options, futures, fixed income, and corporate finance, for ambitious students seeking deeper preparation for university-level study in mathematics, economics, and finance.

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Education

Columbia University, School of Engineering & Applied Science
Civil Engineering
New York University, Stern School of Business - Finance
MBA

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Approved Subjects

ACT Math

ACT Math

I am an experienced ACT Math instructor with Ivy League training, holding a BS in Civil Engineering from Columbia University’s School of Engineering and Applied Science, where I completed Columbia’s advanced calculus sequence under Professor Lipman Bers. I prepare students for the full range of ACT Math topics, including algebra, geometry, functions, trigonometry, word problems, and quantitative reasoning, with an emphasis on speed, accuracy, and efficient problem-solving under timed conditions. My teaching combines diagnostic assessment, targeted review of weak areas, and effective test-taking strategies to help students strengthen both their mathematical foundation and their exam performance. Many of my students have gone on to score in the 99th percentile on standardized tests.
Algebra 1

Algebra 1

As a highly skilled Algebra I, Algebra II, and Precalculus instructor, I offer my students a deep reservoir of knowledge and many years of teaching experience. I hold a BS in Engineering from Columbia University's School of Engineering and Applied Science and scored in the 99th percentile on the Math SAT. Having completed advanced coursework in mathematics, I possess a comprehensive understanding of the subject and a proven history of guiding students through complex algebraic concepts. I also excel in teaching problem-solving strategies and preparing students for elite math competitions such as the Math Olympiad and American Mathematics Competitions, all of which demand a solid foundation in algebra.
Algebra 2

Algebra 2

As a highly skilled Algebra I, Algebra II, and Precalculus instructor, I offer my students a deep reservoir of knowledge and many years of teaching experience. I hold a BS in Engineering from Columbia University's School of Engineering and Applied Science and scored in the 99th percentile on the Math SAT. Having completed advanced coursework in mathematics, I possess a comprehensive understanding of the subject and a proven history of guiding students through complex algebraic concepts. I also excel in teaching problem-solving strategies and preparing students for elite math competitions such as the Math Olympiad and American Mathematics Competitions, all of which demand a solid foundation in algebra.
AMC (Competition math)

AMC (Competition math)

I am an experienced competition mathematics instructor with a BS in Civil Engineering from Columbia University’s School of Engineering and Applied Science. I prepare students for AMC 8, AMC 10, AMC 12, AIME, Olympiad-track development, MATHCOUNTS, the Harvard-MIT Mathematics Tournament, the Princeton University Mathematics Competition, and Canadian mathematics competitions. Students under my guidance have qualified for AIME as early as 6th or 7th grade and earned distinctions in national and international contests. My teaching emphasises rigorous reasoning, clear exposition, and efficient problem-solving in algebra, geometry, number theory, combinatorics, and probability.
Business

Business

I hold an MBA in Finance from New York University, Stern School of Business and a BS degree in Engineering from Columbia University, School of Engineering and Applied Science. I have a strong background in business, business analysis, finance, and its underlying mathematics. At NYU Stern, I took advanced courses in business, marketing and advertising, finance, and financial engineering, and know the subjects thoroughly. I have worked for top banks including Bankers Trust, Citigroup, and Chemical Bank. Topics covered include business analysis, corporate finance, financial management, business mathematics, financial products including the theory and pricing of derivatives, equities, fixed income securities or bonds, foreign exchange, and commodities. I am also familiar with analysis and review of complex Harvard Business School case studies or HBR cases, including financial forecasting, competitor analysis, production and inventory analysis, and financial statement analysis. I am also familiar with the valuation of complex products including pricing of embedded options using the Black Scholes model or Binomial option pricing model, discounted cash flow models and similar. I am also familiar with bond and interest rate analytics including the pricing of bonds, duration, yield to maturity and interest rates. I am patient and communicate well and teach intuitively, providing examples and explanations.
Calculus

Calculus

I am an experienced calculus instructor with a BS in Civil Engineering from Columbia University’s School of Engineering and Applied Science, where I completed Columbia’s advanced calculus sequence under Professor Lipman Bers. I teach AP Calculus AB and BC as well as Calculus I, II, and III, including limits, continuity, derivatives, applications of derivatives, integration, sequences and series, parametric and polar topics, vectors, partial derivatives, multiple integrals, and vector calculus. My teaching emphasises clear explanation, strong intuition, and rigorous understanding, so that students learn not only how to solve problems but why the methods work. I work with students who want to improve grades, master demanding coursework, and build a strong foundation for higher mathematics, physics, and engineering.
Chess

Chess

I have been playing and teaching chess for 25 years. My best online rating is 2100+ on ICC. I can teach various openings, middle game strategy, including tactics and combinations, as well as elements of the end game. We play and analyze games during our practice sessions. I communicate well. I teach intuitively, providing many examples making chess a pleasure to learn and play.
Civil Engineering

Civil Engineering

I hold a Bachelor of Science in Civil Engineering from Columbia University's School of Engineering and Applied Science. I completed courses in Structural Analysis and Design, Fluid Mechanics, and Concrete and Steel Design, among others. I gained practical experience working as a structural engineer at Alfred Selnick PE PC, performing structural analysis on various buildings in New York City. I also worked as a Civil Engineer at Martin Gross Associates, an Engineering company, and for the New York City Department of Environmental Protection, contributing to one of the city's most significant projects. This extensive experience has given me a strong background in civil engineering
COOP/HSPT

COOP/HSPT

I graduated from Columbia Engineering where I took advanced courses in mathematics. I scored 760 out of 800 on the Math SAT. I have a strong knowledge of mathematics covering all areas of the COOP / HSPT. including concepts of percents, fractions, and decimals, elementary algebra, ratio and proportion, elementary geometry, ordering of numbers (greater than, less than), angle measurement, positive and negative numbers, Interpretation of data and odd and even numbers. I have tutored many students for the HSPT. I am patient and communicate well and will do my best to help you master the material. I teach intuitively, providing examples and explanations. Using proprietary techniques, I can help my students score higher with practice.
Discrete Math

Discrete Math

I am an experienced Discrete Mathematics Instructor. I graduated from Columbia University School of Engineering and Applied Science with a BS in Civil Engineering and from New York University Stern School of Business with an MBA in Finance. Subjects taught include sets, logic, combinatorics, graph theory, and proof techniques, which are foundational topics in Discrete Mathematics. I also teach the theory and proof underpinning these topics. At Columbia Engineering, I took advanced courses in Mathematics, including the study of discrete structures and advanced logic. I am well-versed in these concepts and have tutored numerous students in Discrete Mathematics, helping them understand the principles and applications. I teach intuitively, providing examples and explanations. I am patient and communicate well, and I will do my best to help you master the material and score higher.
Elementary (K-6th)

Elementary (K-6th)

I am an experienced instructor and teach mathematics and science. I hold a BS degree in Engineering from Columbia University, School of Engineering and Applied Science. I have tutored many students in mathematics and science including students in Elementary Math & Science programs. I also prepare elementary school students for the math competitions they would necessarily compete in the higher grades. Specifically, I teach students problem-solving techniques in preparation for mathematical competitions including the Math Junior Olympiad and the American Mathematics Competitions (AMC 8 /10 /12) and MATHCOUNTS. These competitions are tough and preparation for such competitions with advanced and targeted training in the early grades can be quite helpful and rewarding. I communicate well and will do my best to help the student master the material.
Elementary Math

Elementary Math

I hold a BS degree in Engineering from Columbia University, School of Engineering and Applied Science. I have taken advanced courses in Mathematics and know the subject extremely well. I have tutored many students in mathematics including Elementary Math. I also teach students problem-solving techniques in preparation for mathematical competitions including the Math Junior Olympiad and the American Mathematics Competitions (AMC 8 /10 /12) and MATHCOUNTS. I communicate well and will do my best to help the student master the material.
Elementary Science

Elementary Science

I hold a BS degree in Civil Engineering from Columbia University, School of Engineering and Applied Science. I have taken advanced courses in science and know the subject extremely well. I have tutored many students in science including physics, chemistry and biology. I have strong communication skills and will do my best to help you master the material.
Finance

Finance

I hold an MBA in Finance from New York University, Stern School of Business and a BS degree in Engineering from Columbia University, School of Engineering and Applied Science. I have a strong background in finance and its underlying mathematics. At NYU Stern, I took advanced courses in finance and financial engineering, and know the subjects thoroughly. I have worked for top banks including Bankers Trust, Citigroup, and Chemical Bank. Topics covered include financial mathematics and financial products including the theory and pricing of derivatives, equities, fixed income securities or bonds, foreign exchange, and commodities. Additional topics include corporate finance, the CAPM model, financial management, project finance, and equity and bond pricing. I am also familiar with analysis and review of complex Harvard Business School case studies or HBR cases, including financial forecasting, competitor analysis, production and inventory analysis and financial statement analysis. I also familiar with the valuation of complex products including pricing of embedded options using the Black Scholes model or Binomial option pricing model, discounted cash flow models and similar. I am also familiar with bond and interest rate analytics including the pricing of bonds, duration, yield to maturity and interest rates. I am patient and communicate well and teach intuitively, providing examples and explanations.
Finite Math

Finite Math

I am an experienced instructor with a degree in Civil Engineering from Columbia University’s School of Engineering and Applied Science, along with advanced training in mathematics. For many years, I have taught mathematics focusing on finite math, helping students at various levels build a strong foundation in logical reasoning, quantitative analysis, and applied problem-solving. My areas of expertise include finite mathematics, logic, probability, statistics, matrices, linear models, and discrete structures. I emphasize clear, rigorous instruction that blends mathematical theory with real-world applications, beneficial for students in business, social sciences, computer science, and liberal arts. I specialize in helping college and high school students master the essential concepts of finite math for academic success and practical use.
GED

GED

I am an experienced GED instructor. I hold a BS degree in Engineering from Columbia University, School of Engineering and Applied Science. I scored a 760 out of 800 on my Math SAT. I have taken advanced courses in Mathematics and know the subject very well. I have tutored many students in advanced mathematics including the GED. I also teach students problem-solving techniques to prepare them for mathematical competitions including the Math Olympiad, American Mathematics Competitions (AMC 8 /10 /12) and MATHCOUNTS.
Geometry

Geometry

I hold a BS degree in Engineering from Columbia University, School of Engineering and Applied Science. I have taken advanced courses in Mathematics including Geometry and know the subject well. I have tutored many students in advanced mathematics and geometry.
GMAT

GMAT

I prepare students for the quantitative section of the GMAT exam. I am very fluent in the range and depth of the questions asked having reviewed thousands of problems. I also graduated from New York University Stern School of Business with an MBA in Finance. My undergraduate degree is from Columbia University School of Engineering and Applied Science with a BS in Civil Engineering. I have taken advanced courses in mathematics and know the subject extremely well. I have strong knowledge of mathematics covering all areas of the GMAT. I have tutored many students for the GMAT. I am patient and communicate well and will do my best to help you master the material. I teach intuitively, providing examples and explanations. Using proprietary techniques, I can help my students score higher with practice.
GRE

GRE

I prepare students for the quantitative reasoning section of the GRE exam. I am very fluent in the range and depth of the questions asked having reviewed thousands of problems. I also graduated from New York University Stern School of Business with an MBA in Finance. My undergraduate degree is from Columbia University School of Engineering and Applied Science with a BS in Civil Engineering. I have taken advanced courses in mathematics and know the subject extremely well. I have strong knowledge of mathematics covering all areas of the GRE. I have tutored many students for the GRE. I am patient and communicate well and will do my best to help you master the material. I teach intuitively, providing examples and explanations. Using proprietary techniques, I can help my students score higher with practice.
Homeschool

Homeschool

I hold a BS degree in Civil Engineering from Columbia University, School of Engineering and Applied Science. I tutor mathematics and science to many students who are home-schooled from elementary grades through high school. Therefore I teach Pre-Algebra, Algebra, Geometry, Trigonometry, Pre-Calculus and Calculus. I also prepare home-schooled students for math competitions. Specifically, I teach students problem-solving techniques in preparation for mathematical competitions including the Math Junior Olympiad and the American Mathematics Competitions (AMC 8 /10 /12) and MATHCOUNTS. These competitions are tough and preparation for such competitions with advanced and targeted training in the early grades can be quite helpful and rewarding. I communicate well and will do my best to help the student master the material.
Physics

Physics

I am an experienced physics instructor with a BS in Civil Engineering from Columbia University’s School of Engineering and Applied Science, where my coursework included mechanics, electricity and magnetism, optics, thermodynamics, fluid mechanics, and advanced mathematics. I teach AP Physics 1, AP Physics C, college physics, and F=ma/Physics Olympiad preparation, with an emphasis on clear explanations, rigorous reasoning, and strong problem-solving. I also use advanced mathematics where appropriate to derive important results and give students a deeper understanding of the structure of physics.
Prealgebra

Prealgebra

I am an experienced Prealgebra, Algebra I, Algebra II & Precalculus instructor. I hold a BS degree in Engineering from Columbia University, School of Engineering and Applied Science. I scored a 760 out of 800 on my Math SAT. I have taken advanced courses in Mathematics and know the subject very well. I have tutored many students in advanced mathematics including Prealgebra. I also teach students problem-solving techniques to prepare them for mathematical competitions including the Math Olympiad, American Mathematics Competitions (AMC 8 /10 /12) and MATHCOUNTS.
Precalculus

Precalculus

I am an experienced instructor in precalculus with a BS in Civil Engineering from Columbia University’s School of Engineering and Applied Science, where I completed Columbia’s advanced calculus sequence under Professor Lipman Bers. I teach both Precalculus and AP Precalculus, including functions and their transformations, polynomial, rational, exponential, and logarithmic functions, trigonometry, identities, complex numbers, vectors, and polar and parametric topics. My teaching emphasises clear explanation, rigorous understanding, and strong algebraic technique, so that students master the material rather than memorise procedures. I work with students who want to strengthen their foundation, improve grades, and prepare thoroughly for calculus, physics, and other demanding STEM coursework.
PSAT

PSAT

I graduated from Columbia Engineering where I took advanced courses in mathematics. I scored 760 out of 800 on the Math SAT. I have strong knowledge of mathematics covering all areas of the PSAT which include algebra, plane geometry, coordinate geometry, trigonometry, word problems, and equations. I have tutored many students for the PSAT. I am patient and communicate well and will do my best to help you master the material. I teach intuitively, providing examples and explanations. Using proprietary techniques, I can help my students score higher with practice.
SAT Math

SAT Math

I am an experienced SAT Math instructor with a BS in Civil Engineering from Columbia University’s School of Engineering and Applied Science, an Ivy League institution, where I completed Columbia’s advanced calculus sequence under Professor Lipman Bers. I prepare students for the full range of SAT Math topics, including algebra, advanced algebra, geometry, problem-solving, data analysis, and word problems, with an emphasis on accuracy, efficiency, and strong performance under timed conditions. My teaching combines diagnostic assessment, targeted review of weak areas, and effective test-taking strategies to help students strengthen both their mathematical foundation and their exam performance. Many of my students have gone on to score in the 99th percentile on standardized tests.
SSAT

SSAT

I graduated from Columbia Engineering where I took advanced courses in mathematics. I scored 760 out of 800 on the Math SAT. I have a strong knowledge of mathematics covering all areas of the SSAT including concepts of percents, fractions, and decimals, elementary algebra, ratio and proportion, elementary geometry, ordering of numbers (greater than, less than), angle measurement, positive and negative numbers, Interpretation of data and odd and even numbers. I have tutored many students for the SSAT. I am patient and communicate well and will do my best to help you master the material. I teach intuitively, providing examples and explanations. Using proprietary techniques, I can help my students score higher with practice.
Trigonometry

Trigonometry

I graduated from Columbia University School of Engineering and Applied Science with a BS in Civil Engineering, and New York University Stern School of Business with an MBA in Finance. I scored a 760 out of 800 on my Math SAT. At Columbia University, I took advanced courses in Mathematics including Trigonometry. I know the subject very well. I have tutored many students in Trigonometry. I teach intuitively, providing examples and explanations. I am patient and communicate well and will do my best to help you master the material.
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Ratings and Reviews

Rating

5.0 (3,155 ratings)
5 star
(3,152)
4 star
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3 star
(2)
2 star
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1 star
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Reviews

Exceptional math teacher!

Both my sons have been working with Ephraim for three years. In this period, he has taught them prealgebra, algebra I and algebra II and geometry, counting and probability, and number theory. He also prepared my eldest son for the AMC 8 and 10 competitions with outstanding results. Ephraim can find gaps and works through topics well, rigorously explaining the analytics behind the mathematics and deriving /proving results along the way. This results in my sons having a deep understanding of mathematics. I highly recommend Ephraim.

Ruyi, 350 lessons with Ephraim

Fantastic tutor with amazing depth of knowledge

Ephraim understand well the level of your child and will adjust his teaching to meet their needs and then to push them to the next level. He is encouranging but also has certain structure he will want the child to follow which creates productive and amazing results. My child thinks he is awesome and she loves math even more now!

Caroline, 191 lessons with Ephraim

Fantastic tutor with amazing depth of knowledge

Ephraim understand well the level of your child and will adjust his teaching to meet their needs and then to push them to the next level. He is encouranging but also has certain structure he will want the child to follow which creates productive and amazing results. My child thinks he is awesome and she loves math even more now!

Caroline, 191 lessons with Ephraim

Fantastic tutor with amazing depth of knowledge

Ephraim understand well the level of your child and will adjust his teaching to meet their needs and then to push them to the next level. He is encouranging but also has certain structure he will want the child to follow which creates productive and amazing results. My child thinks he is awesome and she loves math even more now!

Caroline, 191 lessons with Ephraim

Best GRE Math Tutor on Wyzant

I recently had the pleasure of working with Ephraim, my GRE math tutor, and the experience was nothing short of exceptional. Ephraim possesses a deep understanding of GRE math concepts, effortlessly navigating through complex problems with clarity and precision. What sets Ephraim apart is his personalized approach. He takes the time to understand individual strengths and weaknesses, tailoring sessions to meet specific needs. His patient demeanor creates a supportive learning environment, making even the most challenging problems approachable. Ephraim's commitment to fostering independent problem-solving skills is noteworthy. Instead of providing quick solutions, he guides students through the process, empowering them with the tools to tackle a variety of GRE math problems. Beyond his expertise, Ephraim's teaching style incorporates real-world examples, making the material more relatable and engaging. The result is a comprehensive and enjoyable learning experience that goes beyond mere test preparation. In conclusion, Ephraim is not just a tutor but a valuable resource for anyone seeking excellence in GRE math preparation. His expertise, personalized guidance, and commitment to fostering independent thinking make him an outstanding choice for those looking to succeed on the GRE. I am grateful for the positive impact he had on my test preparation journey.

Jessica, 28 lessons with Ephraim

Exceptional Math Tutor

My son first started working with Ephraim three years ago to help prepare him for the AMC 10. Since then, my son’s lessons with Ephraim have transitioned to Precalculus and the Math portion of the SATs. Ephraim has been instrumental in both my son’s love of math and his ability to master increasingly challenging math topics. Ephraim skillfully navigates being able to challenge my son, while also providing support in areas where my son needs extra help. He does all of this in a manner that keeps my son excited, engaged, and confident. I highly recommend Ephraim — we feel so fortunate that we found him!

Sarah, 353 lessons with Ephraim

Knowledgeable and patient

Ephraim has been a great tutor for my son who is currently moving up to 8th grade, he has prepared him for AMC 10, algebra 1 honors, and geometry honors recently. My son was initially struggling in 5th grade, however, he is now excelling and excited to do math. He is motivated to go to his lessons and enjoys it so much, that I don't even have to remind him to go to lessons. Ephraim explains the material very well and is very patient with children. I highly recommend him.

Wibisono, 713 lessons with Ephraim

Exceptional math tutor

It has been about a year since we have been studying math with Ephraim. Our primary focus is to go over Algebra and to prepare for math competitions including AMC and Mathcounts. He is very knowledgeable about how to prepare for the test and exceptional at identifying areas of weakness to explain things clearly. He always steps through any questions or areas of doubt before moving ahead. My son got a great outcome from the recent MAP test on math and he is confident that he is well prepared for upcoming math competitions. Not only from an academic perspective, Ephraim is exceptional at communicating with and motivating young adults. Ephraim has made the tutoring experience enjoyable and my son loves math even more than before. We highly recommend Ephraim to all students!

Heejin, 47 lessons with Ephraim

Extraordinary GMAT tutor

Ephraim is an extraordinary GMAT tutor. He’s the right tutor for the business school applicant who fits any of the following criteria: 1. Values their time and wants to approach the GMAT as efficiently as possible 2. Hasn’t done math since high school and needs to revisit the fundamentals 3. Is seeking a perfect score Ephraim breaks things down so that you understand WHY the answer is right. He’s been teaching math so long, and from so many different perspectives, that he knows the best/fastest way to teach any topic you throw at him. Plus, he’s super encouraging all the time and made relearning math for the GMAT a genuine pleasure. If for whatever reason I need to get good at math again, I’m calling up Ephraim.

Alex, 18 lessons with Ephraim

Knowledge and dedication

Ephraim is the best math teacher I have even known. Having been teaching my high school daughter for about a year. It’s our fortune to have him in my child’s education experience. He’s knowledge, dedication, and passion is remarkable.

Florence, 210 lessons with Ephraim
Hourly Rate: $200
Response time: 37 minutes
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